hey y'all! Newbie here. I just acquired some ike dollars through family.

I know that they are not worth to much over face unless i have the Rare types. I will be scrutinizing each one. However i would like to separate the best looking ones from the rest to maybe sell. These have been in a closet and are uncirculated. What's funny is the collection has only the following dates '71,'72,'74,'76 and only 2 of '77.
What would I look for when i try to grade them?
Thanks for any help.